<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        padding: 0;
        margin: 0;
        background-color: #333;
        color: #fff;
        box-sizing: border-box;
      }
      body {
        width: 100vw;
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
      }

      .indicator {
        width: 150px;
        height: 150px;
        margin-bottom: 20px;
        background-color: #fff;
        border-radius: 50%;
        position: relative;
        overflow: hidden;
      }
      .indicator::after {
        content: '';
        width: 320px;
        height: 320px;
        background-color: skyblue;
        border-radius: 38%;
        position: absolute;
        left: -90px;
        top: 116px;
        animation: rr 5s 0s linear infinite;
      }
      @keyframes rr {
        from {
          transform: rotate(0deg);
        }
        to {
          transform: rotate(360deg);
        }
      }
    </style>
  </head>
  <body>
    <div class="container">
      <div class="indicator"></div>

      <!-- <section>
        <input type="range" id="volumn" min="-2" max="164" />
        <label for="volumn">volumn</label>
        <span></span>
      </section> -->
    </div>

    <script>
      // const OInput = document.querySelector('input[type="range"]')
      // const OSpan = document.querySelector('span')

      // changeVolumn()

      // function changeVolumn() {
      //   OSpan.innerHTML = OInput.value
      // }
      // OInput.addEventListener('input', changeVolumn)
    </script>
  </body>
</html>
